diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8a3c7077..14e179d4 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,8 +14,6 @@ jobs:
     steps:
       - run: git config --global core.autocrlf input
       - uses: actions/checkout@v2.3.2
-        with:
-          packages: pkg-config
       - uses: cygwin/cygwin-install-action@master
       - shell: bash
         run: rm -rf $(which pkg-config)
@@ -43,13 +41,12 @@ jobs:
           echo "PKG_CONFIG_PATH=${GITHUB_WORKSPACE}/vcpkg_installed/${VCPKG_DEFAULT_TRIPLET}/lib/pkgconfig" >> $GITHUB_ENV
 
       - name: Set pkg-config path on Unix
-        shell: cmd
+        shell: bash
         if: runner.os  == 'Windows'
         run: |
           echo "PKG_CONFIG_PATH=${GITHUB_WORKSPACE}\vcpkg_installed\\${VCPKG_DEFAULT_TRIPLET}\lib\pkgconfig" >> $GITHUB_ENV
 
-      - shell: cmd
-        run: |
+      - run: |
           choco install pkgconfiglite
 
       # - run: git config --global core.autocrlf input
@@ -82,7 +79,6 @@ jobs:
       - name: Install deps & build
         run: |
           opam switch 4.14.2-mingw64
-          eval $(opam env --switch=4.14.2-mingw64)
           opam install .  --with-test
           opam exec -- dune build --verbose